/*
 * Copyright (c) 2022 Huawei Device Co., Ltd.
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

function getResolvedZoneId(ZoneId) {
    try {
        const resolvedTimeZone = Intl.DateTimeFormat().resolvedOptions().timeZone;
        return ZoneId.of(resolvedTimeZone);
    } catch (err) {
        // ignore
    }
    return null;
}

/**
 * @private
 *
 * @param ZoneId
 */
export default function extendSystemDefaultZoneId(ZoneId) {
    const resolvedZoneId = getResolvedZoneId(ZoneId);

    if (resolvedZoneId == null) {
        return;
    }

    ZoneId.systemDefault = function () {
        return resolvedZoneId;
    };
}
